TLS Online TPP Program

#Question id: 1066


Carriers

#Unit 4. Cell Communication and Cell Signaling
  1. may have a persistent infection.

  2. may be a source of infection.

  3. usually show symptoms of the disease.

  4. may have a persistent infection AND may be a source of infection.

More Questions
TLS Online TPP Program

#Question id: 29089

#Unit 10. Ecological Principles

Following table shows the number of individuals of different species in two communities, X and Y. Use simple matching index determine the degree of similarity between X and Y community?

TLS Online TPP Program

#Question id: 15816

#Unit 8. Inheritance Biology

You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium.

Which mutations do you know to be in the same gene?

TLS Online TPP Program

#Question id: 2553

#Unit 2. Cellular Organization

Where are the proteins of the electron transport chain located?

TLS Online TPP Program

#Question id: 2363

#Unit 2. Cellular Organization

Cells lining the respiratory tract contain ______ that help keep the lungs clear of particles.

TLS Online TPP Program

#Question id: 28920

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a correct prediction about processing and secretion of Hedgehog protein ?
a) the freed N-terminal is not involved in signaling and is often degraded
b) the freed C-terminal is not involved in signaling and is often degraded
c) the N-terminal becomes the active Hedgehog protein intended for secretion
d) the C-terminal becomes the active Hedgehog protein intended for secretion